Techniques for generating an interloping beacon which can control the behavior of a target wireless device on a CDMA frequency channel without noticeably altering the behavior of non-target wireless devices which share the frequency channel of the target wireless device's live beacon. The interloping beacon is an override beacon which overrides the live beacon's pilot channel and a control message on a code channel on which control messages may be addressed to the target wireless device. The override beacon provides the overriding pilot and the overriding control message only as long as is required for the target wireless device to respond to the overriding control message. The period of time during which the overriding pilot and the overriding control message are generated for the override beacon is so short that only the target wireless device responds without noticeable effect on collateral wireless devices.
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1. A method of using an interloping beacon to cause a call involving a target wireless device and a live beacon to terminate, the target wireless device operating on a frequency channel of the live beacon in a wireless network that operates according to a standard that employs code division multiplexing to define code channels in the frequency channel, the code channels including a pilot channel for a pilot provided by the live beacon and a traffic channel for the call, the method comprising the steps performed by a signal generator which generates the interloping beacon of: on the frequency channel of the live beacon, generating an overriding pilot on the pilot channel to which the target wireless device responds rather than responding to the pilot of the live beacon; and on the frequency channel of the live beacon, generating one or more overriding symbols on the traffic channel which will result in the call being terminated, the overriding pilot and the overriding symbol being generated by the signal generator only as long as required to cause the call to terminate in response to the overriding symbol, whereby causing the call to terminate does not cause another wireless device operating on the frequency channel to respond to the overriding pilot in a manner which is noticeable by a user of the other wireless device.
A method to force a target wireless device (like a phone) to disconnect from a call on a CDMA network. A signal generator creates a temporary "override beacon" on the same frequency channel as the original cell tower ("live beacon"). This override beacon transmits a stronger pilot signal on the pilot channel, causing the target device to switch its attention to the override beacon. Simultaneously, the override beacon sends a specific "disconnect" message on the traffic channel. The signal generator only transmits the override pilot and disconnect message for a short duration, just long enough for the target device to respond and disconnect the call. This brief transmission minimizes interference and prevents other devices on the same channel from being affected.
2. A signal generator configured to generate an interloping beacon, the interloping beacon causing a call involving a target wireless device and a live beacon to terminate, the target wireless device operating on a frequency channel of the live beacon in a wireless network that operates according to a standard that employs code division multiplexing to define code channels in the frequency channel, the code channels including a pilot channel for a pilot generated by the live beacon and a traffic channel for the call, the interloping beacon including an interloping override signal being characterized in that: the interloping override signal provides on the frequency channel of the live beacon: an overriding pilot on the pilot channel to which the target wireless device responds instead rather than responding to the pilot of the live beacon; and one or more overriding symbols on the traffic channel which will result in the call being terminated, wherein the signal generator is configured to generate the overriding pilot and the overriding symbol of the interloping beacon only as long as required to terminate the call.
A signal generator designed to create a temporary "override beacon" to disconnect a specific target wireless device (like a phone) from a call on a CDMA network. The signal generator transmits an "interloping override signal" on the same frequency channel as the original cell tower ("live beacon"). This signal includes a stronger pilot signal on the pilot channel, forcing the target device to switch away from the live beacon's pilot signal. The override signal also includes a specific "disconnect" command transmitted on the traffic channel. The signal generator is programmed to transmit both the overriding pilot and the disconnect message for a minimal time, just long enough for the target device to disconnect from the call, thus minimizing impact on other devices using the same frequency channel.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
September 7, 2010
September 3, 2013
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